@mmeece I agree it is rare, and that is another reason I favor simplifying it.
Generally, the batter is going to have to toss the bat beyond where they bunted the ball for it to happen, which is unusual. Like I said, I don't expect them to not drop the bat in fair territory ... I just don't expect them to toss it farther than the ball went (not really a drop then).
I hadn't considered it the way you described with the bat beyond the ball. The only ways I've seen it is when the ball pops up and backspins towards the bat or when the bat is dropped on the 1B line and the ball curves into it.